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Preallocate slices in fileset

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This commit is contained in:
Jakob Borg 2014-04-13 14:21:38 +02:00
parent 94f5d5b59e
commit e974c8f33e
1 changed files with 3 additions and 3 deletions
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6
files/set.go
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@ -143,7 +143,7 @@ func (m *Set) Need(id uint) []scanner.File {
if debug { if debug {
dlog.Printf("Need(%d)", id) dlog.Printf("Need(%d)", id)
} }
var fs []scanner.File var fs = make([]scanner.File, 0, len(m.globalKey)/2) // Just a guess, but avoids too many reallocations
m.Lock() m.Lock()
rkID := m.remoteKey[id] rkID := m.remoteKey[id]
for name, gk := range m.globalKey { for name, gk := range m.globalKey {
@ -162,7 +162,7 @@ func (m *Set) Have(id uint) []scanner.File {
if debug { if debug {
dlog.Printf("Have(%d)", id) dlog.Printf("Have(%d)", id)
} }
var fs []scanner.File var fs = make([]scanner.File, 0, len(m.remoteKey[id]))
m.Lock() m.Lock()
for _, rk := range m.remoteKey[id] { for _, rk := range m.remoteKey[id] {
fs = append(fs, m.files[rk].File) fs = append(fs, m.files[rk].File)
@ -175,7 +175,7 @@ func (m *Set) Global() []scanner.File {
if debug { if debug {
dlog.Printf("Global()") dlog.Printf("Global()")
} }
var fs []scanner.File var fs = make([]scanner.File, 0, len(m.globalKey))
m.Lock() m.Lock()
for _, rk := range m.globalKey { for _, rk := range m.globalKey {
fs = append(fs, m.files[rk].File) fs = append(fs, m.files[rk].File)